diff --git a/scm-webapp/src/main/java/sonia/scm/security/ScmRealm.java b/scm-webapp/src/main/java/sonia/scm/security/ScmRealm.java
index 6d0d246906..f34ebdcae7 100644
--- a/scm-webapp/src/main/java/sonia/scm/security/ScmRealm.java
+++ b/scm-webapp/src/main/java/sonia/scm/security/ScmRealm.java
@@ -136,6 +136,7 @@ public class ScmRealm extends AuthorizingRealm
   {
     this.configuration = configuration;
     this.userManager = userManager;
+    this.groupManager = groupManager;
     this.repositoryDAO = repositoryDAO;
     this.authenticator = authenticator;
     this.cache = cacheManager.getCache(String.class, AuthorizationInfo.class,